Casein glue.



UNITED STATES PATENT oEEIoE.

FRANCIS X. GOVERS, OF OW'EGO, NEW YORK, ASSIGNOR TO AMERIOUSMANUFACTURING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

Specification of Letters Patent.

CASEIN GLUE.

Patented Sept. 12, 1905.

To all whom, it may concern:

Be it known that I, FRANoIs X. GovERs, a citizen of the UnitedStates,residing at Owego, in the county of Tioga and State of New York,have invented new and useful Improvements in Casein Glue, of whichthefollowing is a specification.

This invention relates to adhesives, and particularly to compositions ofthis character containing casein or compounds of casein, and has for itsparticular object to provide a strong stable waterproof casein glue ofhigh penetrating power which is free from the disadvantages of caseinglues and cements which have been heretofore used.

I have discovered that a glue composition containingcasein,trisodiumphosphate,sodium hyposulfite, and formaldehyde is possessed of greaterstrength, stability, and penetrating power than has been obtained priorto the practice of this invention. Such a composition will not thickennor decompose, but will remain in a satisfactory workable condition forpractically an indefinite period. It has an acid reaction, and its useis not attended by the injurious effects upon fabrics, brushes, and thelike which is incident to the use of casein glues and cements containingrelatively large amounts of alkali. It forms a very strong joint, whichis practically waterproof.

In preparing my improved glue I dissolve the casein in a solution oftrisodium phosphate and sodium hyposulfite and add the formaldeh yde,preferably in the form of the fortyper cent. aqueous solution known asformalin.

The proportions of the ingredients of my improved compositions may bevaried in accordance with the uses to which it is to be applied. Thefollowing proportions, by weight,

My improved composition is not only adapted for use as a glue, but canbeadvantageously employed either alone or with other materials as acovering for leather and wood or as a coating for the interior ofbarrels and such and any other uses for which my composition if found tobe adapted are contemplated as within the exclusive protection for whichapplication is hereby made.

It is to be understood that my invention is not limited to the exactproportions of the ingredients specified, as these may be varied withinWide limits Without departing from the spirit of my invention orsacrificing any of its advantages. It is to be further understood thatchemical equivalents of the ingredients herein specified may besubstituted therefor within my invention and the scope of the appendedclaims.

-Having thus described my invention, what I claim as novel, and desireto secure by Letters Patent, is-

1. A glue containing casein and an alkaline hyposulfite.

2. A glue containing casein, a hyposulfite and formaldehyde.

3. A glue containing casein, an alkaline phosphate, an alkalinehyposulfite and formaldehyde.

4:. A glue containing casein, sodium hyposulfite and formaldehyde.

5. A glue containing casein,trisodium phosphate, sodium hyposulfite andformaldehyde.

6. A waterproof glue composition having an acid reaction containingcasein, sodium hyposulfite, formaldehyde and water.

7. The herein-described glue composition consisting of casein, trisodiumphosphate, sodium hyposulfite, formaldehyde and water.

In testimony whereof I affix my signature in presence of two subscribingwitnesses.

ERAN Is X. GOVERS.

Witnesses:

KATHRYN LA MONTE, ALFRED PFIRLAY.

